Polypropylene fiber can improve the property after the cracking of cement stabilized macadam and it also can extensively improve the strain filed ahead of the crack tip.

• 聚丙烯纤维对水泥稳定碎石的裂后行为有很大改善，并且可以改善水泥稳定碎石的裂缝尖端位移场分布，能有效地增强水泥稳定碎石的断裂韧性。